The collection is mirrored at various sites around the world. The
mirror sites are listed in the introduction to the collection (or in
the README file for FTP access).

via a mail server:
If you do not have HTTP or FTP access, then you can search
the collection via a mail server. To find out how, send a mail
containing only the line "help" in the body of the mail to

bibserv@ira.uka.de

I welcome any hints to bibliographies not yet in this collection or
contributions to this collection. BUT, please do not mail me
unsolicited bibliographies. First contact me and indicate the entry
format, area of coverage, size and author attribution(s).